Corrosion inhibitor

C - Chemistry – Metallurgy – 23 – F

Patent

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Details

C23F 11/08 (2006.01) C23C 22/68 (2006.01) C23F 11/18 (2006.01) C23G 1/00 (2006.01)

Patent

CA 2137837

L'invention a pour objet un inhibiteur de la corrosion d'un matériau métallique, tel que l'acier, du type constitué par une solution aqueuse renfermant un nitrite de métal alcalin, caractérisé en ce que ladite solution renferme 0,01 à 0,3 mol/l d'un nitrite de métal alcalin, 0,01 à 0,3 mol/l d'un phosphate d'un métal alcalin, et de l'acide phosphorique à raison d'une quantité suffisante pour maintenir le pH de ladite solution, mesuré à température ambiante, entre 6,9 et 7,2.

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